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APA-referensHaarlaa, R. (1981). Productivity measurement in logging operations: Recommendations based on international practice. Harvesting Research Group. Division of Forest Research.
Chicago-stil citatHaarlaa, Rihko. Productivity Measurement in Logging Operations: Recommendations Based on International Practice. Canberra: Harvesting Research Group. Division of Forest Research, 1981.
MLA-referensHaarlaa, Rihko. Productivity Measurement in Logging Operations: Recommendations Based on International Practice. Harvesting Research Group. Division of Forest Research, 1981.
Harvard-stil citatHaarlaa, R. 1981. Productivity measurement in logging operations: Recommendations based on international practice. Canberra: Harvesting Research Group. Division of Forest Research.